add scripts for C# windows tests
diff --git a/kokoro/windows/csharp/continuous.cfg b/kokoro/windows/csharp/continuous.cfg
new file mode 100644
index 0000000..f586585
--- /dev/null
+++ b/kokoro/windows/csharp/continuous.cfg
@@ -0,0 +1,5 @@
+# Config file for running tests in Kokoro
+
+# Location of the build script in repository
+build_file: "protobuf/kokoro/windows/csharp/build.bat"
+timeout_mins: 1440